/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package com.sun.faces.component.search;

import javax.faces.component.UIComponent;
import javax.faces.component.search.SearchExpressionContext;
import javax.faces.component.search.SearchExpressionHint;
import javax.faces.component.search.SearchKeywordResolver;

public abstract class AbstractSearchKeywordResolverImpl extends SearchKeywordResolver {
    
    protected <T> T closest(Class<T> type, UIComponent base)  {
        UIComponent parent = base.getParent();

        while (parent != null)  {
            if (type.isAssignableFrom(parent.getClass())) {
                return (T) parent;
            }

            parent = parent.getParent();
        }

        return null;
    }

    protected boolean isHintSet(SearchExpressionContext searchExpressionContext, SearchExpressionHint hint) {
        return searchExpressionContext.getExpressionHints().contains(hint);
    }
}
